#include "stdio.h"

int twoDigitAdd(int a, int b) {
    //todo write your algorithm here
	int c;
	a=a%100;
	b=b%100;
	c=a+b;
	if(c>99)
	{
		c=c%100;
	}
	return c;


}

int main(void)
{
	 int a;
     int b;
	 printf("请输入\n");
	scanf("%d %d",&a,&b);
	if(a<0||b<0)
	{
		printf("输入不能为负数");
	
	}
	else{	printf("%d add %d is %d", a, b, twoDigitAdd(a, b));

	}

   scanf("%d");
    
    return 0;
}

